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      Question

      ?2 = √20.25 × 10 + √16 +

      32 What value should come in place of (?) in the following questions?
      A 9 Correct Answer Incorrect Answer
      B 6 Correct Answer Incorrect Answer
      C 16 Correct Answer Incorrect Answer
      D 12 Correct Answer Incorrect Answer
      E 15 Correct Answer Incorrect Answer

      Solution

      ?2 = √20.25 × 10 + √16 + 32 => ?2 = 4.5 × 10 + 4 + 32 => ?2 = 45 + 4 + 32 => ?2 = 81 => ? = 9

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